<template>
  <div class="fm-uplaod-container" :id="uploadId">
    <div class="" :class="{ 'is-disabled': disabled }" @click.self="handleAdd">
      <i
        class="el-icon-upload"
        @click.self="handleAdd"
        style="
          font-size: 40px;
          color: rgb(192, 196, 204);
          margin-left: 25px;
          margin-top: -10px;
          line-height: 50px;"
      ></i>
      <input
        :accept="supportedTypeStr"
        v-if="multiple"
        multiple
        ref="uploadInput"
        @change="handleChange"
        type="file"
        :style="{ width: 0, height: 0 }"
        name="file"
        class="el-upload__input upload-input"
      />
      <input
        :accept="supportedTypeStr"
        v-else
        ref="uploadInput"
        @change="handleChange"
        type="file"
        :style="{ width: 0, height: 0 }"
        name="file"
        class="el-upload__input upload-input"
      />
    </div>

    <ul class="el-upload-list el-upload-list--text">
      <li
        class="el-upload-list__item is-success"
        v-for="item in fileList"
        :key="item.key"
      >
        <a class="el-upload-list__item-name" :href="item.url">
          <i class="el-icon-document"> </i>{{ item.name }}
        </a>
      </li>
      <!--        <label class="el-upload-list__item-status-label"><i-->
      <!--                class="el-icon-upload-success el-icon-circle-check"></i></label><i class="el-icon-close" @click="handleRemove(item.key)"></i><i-->
      <!--              class="el-icon-close-tip">删除</i></li>-->
    </ul>
  </div>
</template>

<script>
import Viewer from "viewerjs";
import Draggable from "vuedraggable";
import * as qiniu from "qiniu-js";
require("viewerjs/dist/viewer.css");
import axios from "axios";

export default {
  components: {
    Draggable
  },
  props: {
    value: {
      type: Array,
      default: () => []
    },
    width: {
      type: Number,
      default: 100
    },
    height: {
      type: Number,
      default: 100
    },
    token: {
      type: String,
      default: ""
    },
    domain: {
      type: String,
      default: ""
    },
    multiple: {
      type: Boolean,
      default: false
    },
    length: {
      type: Number,
      default: 9
    },
    isQiniu: {
      type: Boolean,
      default: false
    },
    isDelete: {
      type: Boolean,
      default: false
    },
    min: {
      type: Number,
      default: 0
    },
    meitu: {
      type: Boolean,
      default: false
    },
    editable: {
      type: Boolean,
      default: false
    },
    action: {
      type: String,
      default: ""
    },
    supportedTypeStr: {
      type: String,
      default: ""
    },
    disabled: {
      type: Boolean,
      default: false
    }
  },

  data() {
    return {
      fileList:
        this.value instanceof Array
          ? this.value.map(item => {
              return {
                key: item.key
                  ? item.key
                  : new Date().getTime() +
                    "_" +
                    Math.ceil(Math.random() * 99999),
                url: item.url,
                name: item.name,
                percent: item.percent ? item.percent : 100,
                status: item.status ? item.status : "success"
              };
            })
          : [],
      viewer: null,
      uploadId: "upload_" + new Date().getTime(),
      editIndex: -1,
      meituIndex: -1
    };
  },
  created() {},
  computed: {
    miniWidth() {
      if (this.width > this.height) {
        return this.height;
      } else {
        return this.width;
      }
    }
  },
  mounted() {
    this.$emit("input", this.fileList);
  },
  methods: {
    handleChange() {
      if (this.fileList.length >= this.length) {
        this.$message({
          message: "上传文件数超过了最大限制",
          type: "warning"
        });
        return;
      }

      const files = this.$refs.uploadInput.files;

      if (files.length >= this.length) {
        this.$message({
          message: "上传文件数超过了最大限制",
          type: "warning"
        });
        return;
      }
      for (let i = 0; i < files.length; i++) {
        const file = files[i];

        const reader = new FileReader();
        const key =
          new Date().getTime() + "_" + Math.ceil(Math.random() * 99999);
        reader.readAsDataURL(file);
        reader.onload = () => {
          if (this.editIndex >= 0) {
            this.$set(this.fileList, this.editIndex, {
              key,
              url: reader.result,
              name: file.name,
              percent: 0,
              status: "uploading"
            });

            this.editIndex = -1;
          } else {
            this.fileList.push({
              key,
              url: reader.result,
              name: file.name,
              percent: 0,
              status: "uploading"
            });
          }

          this.$nextTick(() => {
            this.uplaodAction(reader.result, file, key);
          });
        };
      }
      this.$refs.uploadInput.value = [];
    },
    uplaodAction(res, file, key) {
      let changeIndex = this.fileList.findIndex(item => item.key === key);
      let formData = new FormData();
      formData.append("file", file);
      const url = this.action;

      var options = {
        // 设置axios的参数
        url: url,
        data: formData,
        name: file.name,
        method: "post",
        headers: {
          "Content-Type": "multipart/form-data"
        }
      };
      // 文件上传
      axios({
        method: "POST",
        url: url,
        data: formData
      })
        .then(res => {
          let data = res.data;
          if (data.code == 0) {
            this.$set(
              this.fileList,
              this.fileList.findIndex(item => item.key === key),
              {
                ...this.fileList[
                  this.fileList.findIndex(item => item.key === key)
                ],
                status: "success",
                url: data.url
              }
            );
          } else {
            this.$message.error(data.message || "操作失败");
          }
        })
        .catch(e => {
          alert(e);
        });

      // axios(options).then((res) => {
      //
      //
      // }).then(function(res){
      //
      //     console.log( res.data);
      // }).catch(function (error) {
      //     console.log(error);
      // });

      // xhr.setRequestHeader('Content-Type', 'multipart/form-data')
      //
      // xhr.send(formData)
      // xhr.onreadystatechange = () => {
      //   if (xhr.readyState === 4) {
      //     let resData = JSON.parse(xhr.response)
      //     if (resData && resData.url) {
      //       this.$set(this.fileList, this.fileList.findIndex(item => item.key === key), {
      //         ...this.fileList[this.fileList.findIndex(item => item.key === key)],
      //         url: resData.url,
      //         percent: 100
      //       })
      //       setTimeout(() => {
      //         this.$set(this.fileList, this.fileList.findIndex(item => item.key === key), {
      //           ...this.fileList[this.fileList.findIndex(item => item.key === key)],
      //           status: 'success'
      //         })
      //         this.$emit('input', this.fileList)
      //       }, 200)
      //     } else {
      //       this.$set(this.fileList, this.fileList.findIndex(item => item.key === key), {
      //         ...this.fileList[this.fileList.findIndex(item => item.key === key)],
      //         status: 'error'
      //       })
      //       this.fileList.splice(this.fileList.findIndex(item => item.key === key), 1)
      //     }
      //   }
      // }
      // xhr.onprogress = (res) => {
      //   console.log('progress', res)
      //   if (res.total && res.loaded) {
      //     this.$set(this.fileList[this.fileList.findIndex(item => item.key === key)], 'percent', res.loaded/res.total*100)
      //   }
      // }
    },
    uplaodAction2(res, file, key) {
      const _this = this;
      const observable = qiniu.upload(
        file,
        key,
        this.token,
        {
          fname: key,
          mimeType: []
        },
        {
          useCdnDomain: true,
          region: qiniu.region.z2
        }
      );
      observable.subscribe({
        next(res) {
          _this.$set(
            _this.fileList[_this.fileList.findIndex(item => item.key === key)],
            "percent",
            parseInt(res.total.percent)
          );
        },
        error(err) {
          _this.$set(
            _this.fileList,
            _this.fileList.findIndex(item => item.key === key),
            {
              ..._this.fileList[
                _this.fileList.findIndex(item => item.key === key)
              ],
              status: "error"
            }
          );
          _this.fileList.splice(
            _this.fileList.findIndex(item => item.key === key),
            1
          );
        },
        complete(res) {
          _this.$set(
            _this.fileList,
            _this.fileList.findIndex(item => item.key === key),
            {
              ..._this.fileList[
                _this.fileList.findIndex(item => item.key === key)
              ],
              url: _this.domain + res.key,
              percent: 100
            }
          );
          setTimeout(() => {
            _this.$set(
              _this.fileList,
              _this.fileList.findIndex(item => item.key === key),
              {
                ..._this.fileList[
                  _this.fileList.findIndex(item => item.key === key)
                ],
                status: "success"
              }
            );
            _this.$emit("input", _this.fileList);
          }, 200);
        }
      });
    },
    handleRemove(key) {
      this.fileList.splice(
        this.fileList.findIndex(item => item.key === key),
        1
      );
    },
    handleEdit(key) {
      this.editIndex = this.fileList.findIndex(item => item.key === key);

      this.$refs.uploadInput.click();
    },
    handleMeitu(key) {
      this.$emit("on-meitu", this.fileList.findIndex(item => item.key === key));
    },
    handleAdd() {
      if (!this.disabled) {
        this.editIndex = -1;
        this.$refs.uploadInput.click();
      }
    },
    handlePreviewFile(key) {
      this.viewer && this.viewer.destroy();
      this.uploadId = "upload_" + new Date().getTime();

      this.$nextTick(() => {
        this.viewer = new Viewer(document.getElementById(this.uploadId));
        this.viewer.view(this.fileList.findIndex(item => item.key === key));
      });
    }
  },
  watch: {
    fileList: {
      deep: true,
      handler(val) {
        // this.$emit('input', this.fileList)
      }
    }
  }
};
</script>

<style lang="scss">
.fm-uplaod-container {
  .is-disabled {
    position: relative;

    &::after {
      position: absolute;
      top: 0;
      bottom: 0;
      left: 0;
      right: 0;
      // background: rgba(0,0,0,.1);
      content: "";
      display: block;
      cursor: not-allowed;
    }
  }

  .upload-file {
    margin: 0 10px 10px 0;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    // background: #fff;
    overflow: hidden;
    background-color: #fff;
    border: 1px solid #c0ccda;
    border-radius: 6px;
    box-sizing: border-box;
    position: relative;
    vertical-align: top;
    &:hover {
      .uplaod-action {
        display: flex;
      }
    }
    .uplaod-action {
      position: absolute;
      // top: 0;
      // height: 30px;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(0, 0, 0, 0.6);
      display: none;
      justify-content: center;
      align-items: center;
      i {
        color: #fff;
        cursor: pointer;
        margin: 0 5px;
      }
    }
    &.is-success {
      .item-status {
        position: absolute;
        right: -15px;
        top: -6px;
        width: 40px;
        height: 24px;
        background: #13ce66;
        text-align: center;
        transform: rotate(45deg);
        box-shadow: 0 0 1pc 1px rgba(0, 0, 0, 0.2);
        & > i {
          font-size: 12px;
          margin-top: 11px;
          color: #fff;
          transform: rotate(-45deg);
        }
      }
    }
    &.uploading {
      &:before {
        display: block;
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.3);
      }
    }
    .upload-progress {
      position: absolute;
      .el-progress__text {
        color: #fff;
        font-size: 16px !important;
      }
    }
    img {
      max-width: 100%;
      max-height: 100%;
      vertical-align: middle;
    }
  }
  .el-upload--picture-card {
    position: relative;
    overflow: hidden;
    .el-icon-plus {
      position: absolute;
      top: 50%;
      left: 50%;
    }
  }
  .upload-input {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: block;
    opacity: 0;
    cursor: pointer;
  }

  .drag-img-list {
    display: inline;

    .ghost {
      position: relative;
      &::after {
        width: 100%;
        height: 100%;
        display: block;
        content: "";
        background: #fbfdff;
        position: absolute;
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
        border: 1px dashed #3bb3c2;
      }
    }

    & > div {
      cursor: move;
    }
  }
}

.viewer-container {
  z-index: 9999 !important;
}
</style>
